knockout products meaning in English

和拳头产品

At present , our top - ranking brand gdr helmets have obtained snell . m205 , ece , dot approval that are the highest safety testing standard in europe and america . the competitive products jds helmets accord with gb1988 standard and completely obtained ccc china compellent certification , they win the approbation and appraisement of wide scope in the market , also they are the knockout products of our company
认证，以稳定的质量和不断的创新赢得了市场的广泛认可和赞誉，已成为我公司产销的主推品牌近年来，为了更好地完善产品配套服务，我们连续研制推出了摩托车尾箱防盗锁风雨衣等配套产品，深受用户好评。